Champleve is a beautiful technique used in enameling where you create recess compartments or cells, in metal to receive enamels. These recessions can be achieved several ways. One grave out the area using gravers or chisels in any metals of enameling. A second option is the use acid, which has been popular in the past few years. Ferric nitrate works on copper, sulfuric acid on fine silver or sterling silver, to achieve a cell to enamel in.
You place a resist on the areas you do not want the acid to removed such as asphaltum varnish, applied with a paint brush. Now you are ready to float the jewel in the acid. It is rather slow maybe 24 hours to remove the desired depth of metal.
Coral from Enamel Works Supply as a great book out on etching metal for Champleve.
Relief Etching for Jewelers and Enamelists here is the link to her site,
Engraving takes some time to learn and the acids are a nice thing to avoid. My choice is to create a jewel in the Champleve technique using two plates of metal one for the bottom or foundation and one for the top to create an edge. The easiest metal in my opinion is fine silver. And fuse them together. This process is used in granulation buy adding copper to one of the sheets of metal.
The ring will act as a stop for the enamels, also creating the recession create champleve. The first image one part is plated with copper. The second image shows the pieces of fine silver fused together. You can use a torch or kiln.
The third image here I have soldered on a bail with hard sliver solder. And after graving out the background to add some sparkle , I laid in two thin layers of enamel, and polished.
Sharing The Beautiful art of Enameling Patsy Croft